Exterior sieve type bag-type dust remover and its ashing method

Abstract

The present invention relates to an external filtering bag type dust remover and a method for ash removing to the remover thereof. The inner side of the box body of the external filtering bag type remover is provided with a figure pattern card which is fixedly arranged with the filter bag of the inner inserting bag cage that tenses the filter bag, and the external filtering bag type dust remover further includes a back flushing device which provides pressure-stable back flushing air current in the ash removing. The external filtering bag type dust remover realizes the static ash removing the service lifetime is evidently prolonged at the same time the impulse blowing device is saved because that the pressure of the back flushing air current is stable and the tensioned filter bag holds still in the ash removing. The ash removing method comprise the following procedures: first blowing in the pressure-stable back flushing air current to the filter bag; and cutting off the back flushing air current after lasting a predetermined time. The external filtering bag type dust remover and the dust removing method thereof can guarantee that the filter bag is not damaged in the ash removing and prolong the service lifetime of the filter bag.

Description

technical field [0001] The invention relates to a dust collector, in particular to an external filter bag dust collector. The invention also relates to a method for back-blowing and dust-cleaning the outer-filter bag-type dust collector. Background technique [0002] At present, bag filter is widely used in industry to purify dusty gas produced in metallurgy, mining, chemical industry, cement, power generation, grain processing and other industries. [0003] The working principle of the bag filter is to introduce the dust-laden gas into the filter bag and let it pass through the filter bag in the filter bag. The dust particles are intercepted and left on the surface of the filter bag to form a dust layer. The clean air flows out of the dust collector through the filter bag smoothly. [0004] According to the different filtering directions of the filtered airflow, the bag filter can be divided into two types: external filter type and internal filter type. When the outer fi...

AI Technical Summary

Problems solved by technology

[0010] Although the external filter bag filter disclosed in the above-mentioned utility model patent has a longer service life due to the reduced deformation of the filter bag during dust removal; Under the action of the air blowing, there will still be a certain vibration, and the cleaning method is also dynamic cleaning, the filter bag will still be damaged to a certain extent, and its service life is still unsatisfactory

In addition, the above-mentioned bag filter requires a special device for producing high-frequency pulsating back-blowing airflow, which increases the cost of the equipment and reduces the reliability of the equipment operation.

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